Sheet-metal-roof-seam ing implement



(No Model.)

P. VANDEN BERGHE.

SHEET METAL ROOF SEAMING IMPLEMENT UNITED STATES PATE T OFFICE.

PETER VANDEN BERGHE, OF PHILADELPHIA, PENNSYLVANIA.

SHEET-METAL-ROOF-SEAMING IMPLEMENT.

SPECIFICATION forming part of Letters Patent No. 340,174, dated April 20, 1886.

Application filed October 16, 1885. Serial No. 180,033. (No model.)

vania, have invented. certain new and useful Improvements in that Class of Seaminglmplements which are Used in the Construction of Roofs of Sheet Metal, of which the following is a specification. w

The invention relates to improvements upon the seaming-tool described in an application filed by me in the United States Patent Office on the 30th day of July, 1885, and serially numbered 173,073.

The implement which formed the subject of my former applicatiomabove referred to, consisted, essentially,of two oppositely-placed clamping jaws provided with 'pivotally-connected tong-like handles, one of the jaws being provided with a hinged compressing-bar, and with oppositely-placed foot-levers, for facilitating the operation of the device.

In the drawings,Figure 1 represents the machine in perspective elevation. Fig. 2 is a side elevation of one of the clampingjaws. Fig. 3 is a vertical transverse section, the detachableforming-slidebeingin position, and the elevating-blocks being folded under the jaws. Fig. 4 is a plan view of the forming-slide detached. Fig. 5 is a detail in partial transverse vertical section, showing the relation of the adjustable stop to its elevating-block. Fig. 6 represents in transverse vertical section the configuration of the metallic seam of a roof in the several stages of the formation of such seam. Figs. 7 and 8 are transverse vertical sections on the line zz, illustrating the an rangement and operation of the pivoted stop by which the motion of the compressing-plate B is limited.

A designates one of the clamping-jaws, the meeting face of which is preferably slightly inclined outwardly from the top downward. This jaw is provided with a pivoted elevatingblock, a, with a rear hole, a, containing a setscrew or adjustable stop, a, which has a spur or guard, at, and with a liftingand operating handle, A. The opposite jaw, B, has a perpendicular engaging face, an operating-handle, B, and a pivoted elevating or supporting block, b, corresponding to like parts upon the jaw A.

Upon the upper face of the jaw B,.near each extremity thereof, is a guide-lug or holdingplate, b, which receives beneath it the end I) of the detachable forming-slide B, which, when in place, is secured by set-screws b which are received within perforations b in the holding-plates. The follower or compressing-plate B is secured to the upper face of the jaw B by'a hingeconnection, If, the space occupied by such connection having a vertical extent corresponding to the vertical dimensions of the detachable forming-slide. The follower or compressor is provided with a foot-lever, Bflwhich is preferably cast therewith, and a suitable retracting-spring, B is connected to the lever and to the operatinghandle B of the seamer. A stop, 13, pivoted between suitable j aws,b b upon the outer portion of the jaw B, when in its engaging position, operates to limit the movement of the follower. During the formation of the first break or flange this stop B is thrown backward, as shown in Fig. 7, out of action,in order to permit the compressing plate or jaw B to rise to ahorizontal position,-as required. During the later operations the dog is thrown forward to the position shown in Fig. 8, to engage the compressor B at the heel of the footlever B", so that the rising motion of the follower is restricted. In this manner the loss of time is avoided and the foot-lever presented in the position best adapted for convenient operation.

Upon the outer face of the jaw B, below the pivot G, are parallel lugs 12 if, having perforations 1) b, which receive between them an adjustable stop, b", which turns upon a pivotpin, b

In the operation of the machine, in forming a double seam, the jaws will be placed astride the upturned vertical portions (seen at A,Fig. 6) of the two sheets which are to compose the seam, the pivoted blocks being in their elevating position under the jaws, and the formingslide being in its operating position beneath the hinged follower or compressing-plate. The handles A B being then moved quickly toward each other, the jaws will be brought smartly together, and the contact of the forming-slide with the higher of the two upturned flanges instantly forces its upper portion into the position seen atB in Fig. 6,the horizontal portion extending across the opposite vertical flange, and ata right angle thereto. This operation will be repeated in a rapid succession of movements along the seam until the extremity thereof is reached. The operator, then preferably returning to his original position, removes the forming slide, and. advancing along the seam,as before, by means of the hinged compressing plate, forces the overhanging edge of the sheet from its horizontal position downwardly into a vertical position, pendent alongside the opposite flange, as seen at O in Fig. 6. The forming-slide is then again placed in position under the compressing-plate or follower,and the supporting-blocks being moved out from beneath the jaws the operator proceeds, as in the first instance, to force the upper portion of the seam into a horizontal position, as seen at D in Fig. 6. A repetition of the second step above described forces the folded portion into the double-seamed position seen at Ein Fig. 6. In the concluding steps of the operation,and Whenever the forming-slide is not in position, the stop B will be thrown intoitsengagingposition,limitingthe ordinary range of the compressing-plate,and greatly alleviating the labor of the operator. In finishing the seam the to-and-fro movement is still fn rther restricted by the use of the stop b ,enabling the operator to proceed rapidly along the seam, and by a quick succession of regulated blows to hammer the folded parts into the desired closeness of contact and smoothness of finish. v Having described my invention, I claim- 1. Inatinnersseaming implement,thecombination, with one of the two coincident jaws thereof,of a detachable forming-slide,whereby the longer of two "ertical members of a seam is forced into ahorizontal position across the upturned vertical portion of the .shorter member. 2. In a seaming implement,the combination,

'ing-plate to diminish its range of movement.

4. Thecombination,inatinnersseamingimplement, of a jaw which is provided with a stop, the stop being pivoted upon the handle of the jaw,and operating to engage the handle of the opposite jaw and diminish the extent of the arc Within which it has movement.

5. In a tinners clamping implement or seamer, the combinatiomwith one of the jaws thereof, of a supporting block which is pivoted to the jaw,and a stop which consists of a set-screw which is provided with a lateral spur or guard, which engages the pivoted block to retain it in its supporting position.

6. The combination,withthe jaw B. having the guide-lugs or holding-plates b, of the detachable forming-slide B and means for retaining the slide in its position within the guide-lugs.

7. The combination of two coincident clamp ,ing-jaws, each jaw being provided with an, elevating-blochand one of thejawsjbeing pro- :vided also with a compressingplatepr fol lower, and with a pivotedstop which actsgin;

connection with such compressing lower.

plateori'oi-g PETER YANDEN BERGHE. w

Witnesses:

GEO. J. STEINMETZ, CHARLES Ortro. 

